Abstract: An aspect of the present invention relates to an optical information recording medium comprising a recording layer on a surface of a support, wherein the surface of the support has pregrooves with a track pitch ranging from 50 to 500 nm, the recording layer comprises an azo metal complex dye being a complex of six azo dyes and seven transition metal ions. A further aspect of the present invention relates to a method of recording information onto the optical information recording medium and a novel azo metal complex dye.

Abstract: A magnetic recording medium includes, in a main surface of a glass substrate on which a magnetic recording layer is formed, a plurality of annular first thermally-conductive regions having a larger thermal conductivity than the glass substrate that are provided concentrically with the glass substrate. The first thermally-conductive regions are each provided so that it extends across a plurality of tracks. The first thermally-conductive region has a radial width larger than a depth, from the main surface, of the first thermally-conductive region.

Abstract: An optical disc recording medium includes a disc substrate, at least one recording layer which is disposed on one surface side of the disc substrate, a cover layer which is disposed on a laser incident surface side of the recording layer and which is composed of a light-transmissive resin layer, and a hard coat layer which is disposed for surface protection on a laser incident surface side of the cover layer and which is composed of a light-transmissive resin layer. The cover layer is formed such that its thickness decreases from the central portion to the peripheral portion of the disc, the hard coat layer is formed such that its thickness increases from the central portion to the peripheral portion, and the total thickness of the cover layer and the hard coat layer is substantially uniform from the central portion to the peripheral portion.

Abstract: The embodiments disclose a method of creating two-sided template from a single recorded master, including fabricating a first template using a single recorded master, wherein the first template has a changed duty cycle and an unchanged servo arc orientation, creating a replicate of the first template, wherein the replicate has a mirrored servo arc orientation and a changed duty cycle and fabricating a second template using the replicate to produce a predetermined mirrored servo arc orientation and a predetermined duty cycle for imprinting on a second side of a patterned stack.

Abstract: This invention relates to DVDs made from polycarbonate and a special UV curable bonder material consisting of A) an urethane acrylate oligomer as binder, which is the reaction product of i) one or more polyisocyanates and ii) one or more hydroxyfunctional lactone ester (meth)acrylates having a number average molecular weight of from 200 g/mol to 2000 g/mol and having the formula: CH2?C(R1)—C(O)—O—R2—[O—C(O)—R3]n—OH wherein, n is an integer from 1 to 5, R1 is hydrogen or methyl, R2 represents an alkylene group or substituted alkylene group having from 2 to 10 carbon atoms and R3 represents a straight or branched chain alkylene group of from 3 to 8 carbon atoms, and which may be substituted with one or more alkyl groups having from 1 to 12 carbon atoms, B) a reactive thinner, comprising of mono functional acrylates and/or (meth)acrylates C) a photo initiator and D) optional additives which offers improved performance at high data transfer rates.

Abstract: A method of producing a recording medium includes preparing a substrate of the recording medium, forming a first face recording layer at a first face side of the substrate, forming a first face protection layer for protecting the first face recording layer on the first face recording layer, forming a second face constituting whole or a part of a layer configuration at a second face side of the substrate, deactivating a protection feature of the first face protection layer; and forming a first face constituting whole or a part of a layer configuration of a first face on the first face protection layer.

Abstract: An optical information recording medium 1 is constructed by sequentially layering a reflective layer 11, a protective layer 12, a recording layer 13, a protective layer 14, and a light transmissive protective layer 15 on a substrate 10. As the recording layer 13, a recording layer containing ZnS, SiO2, and Sb as principal components, or preferably, a recording layer expressed by a compositional formula [(ZnS)x(SiO2)1-x]y(SbzX1-z)1-y (where 0<x?1.0, 0.3?y?0.7, and 0.8<z?1.0 are met and X denotes at least one element selected from a group of Ga, Te, V, Si, Zn, Ta, and Tb) is adopted.

Abstract: A component comprising a stacked interleaved film structure that includes a plurality of layers inert to light. Alternating layers are either doped with a reverse saturable absorber (RSA) material or the RSA material is located between the adjacent inert layers. In some embodiments, the inert alternating layers have different refractive indices. A data storage device and methods of manufacture are also disclosed.

Abstract: An information device is an information device that records information on or reproduces information from an information recording medium (3). The information device includes a light source (14) and a near-field light generating element (9) including a resonating section (22) configured such that plasmon resonance occurs between the resonating section (22) and a recording region (4). The resonating section (22) causes the plasmon resonance when emission light from the light source is irradiated on the near-field light generating element (9). A resonance enhancing film enhances the plasmon resonance between the resonating section (22) and the recording region (4). The resonating section (22) generates near-field light and irradiates the near-field light on the recording region (4) from a recording layer side.

Abstract: An object of the present invention is to provide a recordable optical recording medium whose characteristics do not deteriorate when recording is conducted in a high-temperature environment. The present invention provides a recordable optical recording medium comprising a substrate as well as at least a reflection layer, recording layer, and light transmission layer provided on the substrate, wherein the recording layer of said optical recording medium contains (a) an azo metal complex dye and (b) another dye whose decomposition temperature is 240° C. to 360° C.

Abstract: An object of the present invention is to provide a recordable optical recording medium whose characteristics do not deteriorate when recording is conducted in a high-temperature environment. The present invention provides a recordable optical recording medium comprising a substrate as well as at least a reflection layer, recording layer and light transmission layer provided on the substrate, wherein the recording layer of said optical recording medium contains (a) an azo metal complex dye and (b) ionic organic compound containing a heteroaromatic quaternary ammonium ion.

Abstract: An optical recording medium including a substrate and two or more recording layers that contain Pd, O, and M (M comprises at least one of Zn, Al, In, and Sn), where O is contained in an amount greater than a stoichiometric composition thereof when M is completely oxidized (into ZnO, Al2O3, In2O3, and SnO2). An nth recording layer of the two or more recording layers, as counted from an opposite side of an incident side of recording light, has a Pd content that is less than that of an (n?1)th recording layer.

Abstract: A sheet for producing a multilayer optical recording medium having a repeated structure in which a plurality of optical recording layers are laminated, wherein the sheet has a structure such that a unit comprising at least a release assisting layer, an optical recording layer having a thickness of 1 to 1,000 nm and a pressure sensitive adhesive layer are disposed on a process film, the release assisting layer is disposed on the surface of the process film, and a pressure sensitive adhesive layer is disposed as the outermost layer, and an absolute value of difference between refractive indices of the release assisting layer and the pressure sensitive adhesive layer at a wavelength of 660 nm is 0.11 or smaller; and a multilayer optical recording medium obtained by using the sheet. The sheet enables to release the process film and transfer the optical recording layer while the condition of the surface of the optical recording layer is kept excellent.

Abstract: A recording medium (10) is provided with a left-handed material layer (1) having at least one of a permittivity and a permeability of a negative value, and having substantially periodically formed structures; and a recording layer (2) including island-shaped and substantially periodically arranged recording regions (22), and being laminated on the left-handed material layer (1). The structure period of the left-handed material layer (1) is equal to or is an integral multiple of the arrangement period of the recording regions (22) of the recording layer (2).

Abstract: A data disc, method and apparatus for forming the disc are disclosed. The data disc includes a first substrate structure bonded to a second substrate structure, with two curable material layers disposed on different sides of at least one of the two substrate structures, and at least one groove formed on a surface of one of the two curable material layers.

Abstract: Imaging layers, optical disks, and methods of preparation of each, are disclosed.

Abstract: An optical or magnetic storage medium is disclosed that includes a disc having layers of graphene on one or both sides of the disc to provide wear protection against scratches and mechanical abrasion.

Abstract: The present invention is directed to a method for producing a data storage medium on a surface of a substrate for storing data in the form of topographic features. The method comprises a first step wherein a crosslinking agent containing at least three alkyne groups is deposited on the surface of the substrate. In a second step the deposited cross linking agent is cured so as to obtain the data storage medium in the form of a crosslinked polymeric layer on the surface of the substrate. The invention is further directed to a data storage medium obtained by this method and a data storage device comprising this data storage medium.

Abstract: An object of the present invention is to provide a recordable recording medium that suppresses increase in terminal noise and does not generate a BCA signal read error. The present invention provides a recordable optical recording medium comprising a substrate as well as at least a reflection layer, recording layer and light transmission layer provided on the substrate, wherein the recording layer of said optical recording medium contains (a) an azo metal complex dye and (b) another dye whose DSC decomposition heat value is 50 cal/g to 200 cal/g and ?max in TFP solution is 250 to 400 nm.

Abstract: The invention discloses an injection molding method for manufacture of a metal-resin composite member; wherein the resin composition used in the method includes a plurality of metal particles having one or more metal melting points between about 200° C. and 400° C.; the resin composition is heated to a temperature higher than the resin melting point and higher than one or more metal melting points to provide a heated resin composition; and wherein injecting the heated resin into a mold results in contact of the heated resin with one or more disposed heated metal member(s) to provide a composite member.

Abstract: A near-field optical disk having surface plasmon amplification by stimulated emission of radiation (SPASER) is provided. The near-field optical disk having SPASER includes a transparent substrate, a first transparent dielectric thin film layer formed on the transparent substrate, a SPASER thin film layer formed on the first transparent dielectric thin film layer, a second transparent dielectric thin film layer formed on the SPASER thin film layer, a recording thin film layer formed on the second transparent dielectric thin film layer, and a third transparent dielectric thin film layer formed on the recording thin film layer.

Abstract: This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and/or reproducing information signals, said substrate comprising an injection molded part, and said substrate having a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25° C. at 2000 Hz in accordance to ASTM E 756-05 05 and a transcriptability of the pit/groove structure of >85%.

Abstract: An optical recording medium includes: a substrate; an information recording layer formed on the substrate for recording and reproducing an information signal by irradiation with light; and a light transmission layer formed on the information recording layer and transmitting the light, the storage elastic modulus of the light transmission layer at ?5° C. being within a range of 1500 MPa or less.

Abstract: Provided is an optical disc in which at least a light reflecting layer and a light transmitting layer that includes a cured film of an ultraviolet curable composition are stacked on a substrate, and information is reproduced by making a blue laser beam be incident on the optical disc from a side of the light transmitting layer, wherein an elastic modulus (25° C.) measured by indenting a Vickers indenter having a vertex angle of 136° under a load of 100 mN into a surface of the cured film of the ultraviolet curable composition is 1,500 MPa or less; and a loss modulus (E?) at 60° C. in a dynamic viscoelastic spectrum of the cured film measured at a frequency of 3.5 Hz is 10 MPa or less. Thus, warpage is reduced during curing and plastic deformation is less likely even under a load for a long period of time.

Abstract: An optical information recording medium includes: a substrate; two or more information signal layers provided on the substrate; and a cover layer provided on the information signal layers. At least one of the two or more information signal layers is provided with an inorganic recording layer including Pd oxide, a first protective layer provided on a first main surface of the inorganic recording layer, and a second protective layer provided on a second main surface of the inorganic recording layer. And at least one of the first protective layer and the second protective layer includes a compound oxide of Si oxide, In oxide and Zr oxide as a main component.

Abstract: A pressure-sensitive adhesive sheet 1 for an optical data recording medium D1 from which a signal with a mark length shorter than the resolution limit of an optical system of a reproducing device is capable of being reproduced by reproduction light emitted during reproducing, the pressure-sensitive adhesive sheet 1 having an adhesive transparent resin layer 11 to be disposed on an data recording layer 3 of the optical data recording medium D1, the transparent resin layer 11 having a (meth)acrylate copolymer containing no acidic group as a main component, the transparent resin layer 11 having a storage elastic modulus at 23° C. of 1.5×105 Pa or less and a gel fraction of 68 wt % or more.

Abstract: Provided is a recording film for an optical information recording medium with which it is possible to meet all predetermined characteristics requirements and increase productivity while reducing the number of layers in the optical information recording medium. The present invention relates to a recording film for an optical information recording medium on which recording is performed by laser light irradiation, wherein the recording film for an optical information recording medium includes: Mn; at least one element (group X element) selected from the group consisting of Bi, Ag, Co, Cu, In, Sn, and Zn (group X); and oxygen (O). At least some of the Mn and at least some of the group X element are oxidized.

Abstract: An information recording medium including three or more information layers, wherein: at least one information layer includes a recording layer and a nucleation layer; the recording layer contains a material that is represented by formula (1) [(Ge0.5Te0.5)x(In0.4Te0.6)1-x]ySb100-y (mol %) with x satisfying 0.8?x<1.0 and y satisfying 95?y<100; the nucleation layer contains a material that is represented by formula (2) (Ge0.5Te0.5)z(Bi0.4Te0.6)100-z (mol %) with z satisfying 10?z?71; and the nucleation layer is in contact with the recording layer. This information recording medium is capable of achieving sufficient signal amplitude even in cases where a small recording mark is formed, and is also capable of stably maintaining a small recording mark.

Abstract: [Object] To provide an optical recording medium that can be applied to a write-once optical recording medium having a high capacity of about 25 GB per one layer, and has good recording properties when a multilayered recording layer configuration is provided. [Solving Means] It includes a substrate 21 and two to four recording layers 221 and 222. At least one or more of these recording layers 221 and 222 are specific recording layers with a composition containing PdO and PdO2 as well as at least one of completely oxidized In, Zn, Al and Sn (in other words, In2O3, ZnO, Al2O3 and SnO2). Adjacent to the specific recording layers, dielectric layers 232a and 232b of In/Al oxide layers containing at least either of In or Al as a main component are disposed.

Abstract: The present invention provides a non-resonant two-photon absorption recording material containing a non-resonant polymer two-photon absorption compound, and the non-resonant two-photon absorption recording material wherein the main chain of the non-resonant polymer two-photon absorption compound contains at least one member selected from polystyrene, polyacrylate, polymethacrylate, polyester, polyurethane, polyether and polyimide, and also provides an optical information recording medium having a recording layer containing the recording material.

Abstract: A data disc, method and apparatus for forming the disc are disclosed. The data disc includes a first substrate structure bonded to a second substrate structure, with two curable material layers disposed on different sides of at least one of the two substrate structures, and at least one groove formed on a surface of one of the two curable material layers.

Abstract: A process for protecting the external face of an electro-optical device, the external face comprising at least one optical film adhesively bonded to a transparent substrate and set back therefrom, comprises encapsulating the optical element between the substrate and a transparent cover that is substantially the same size as the substrate. The process comprises adhesive bonding of the cover, the adhesive bonding being achieved by depositing uncured adhesive in two steps, namely a first step that is used first to take up the step difference between the substrate and the optical element, and a second step that is used to adhesively bond the protective cover. Smaller respective thicknesses of adhesive shrink in each step and thus, in the end, the total shrinkage is limited and the quality of the product is improved.

Abstract: The invention provides a master disc comprising a stack of a substrate, a phase transition material layer, a heat absorption layer provided between the substrate and the phase transition layer, and an anisotropic heat sink layer provided between the substrate and the absorption layer. Further, a method of manufacturing a master disc is provided. A stack having an upper side and a lower side is provided, wherein the stack comprises a substrate provided at the lower side of the stack, a phase transition material layer, a heat absorption layer provided between the substrate and the phase transition layer, and an anisotropic heat sink layer provided between the substrate and the absorption layer. The upper side of the stack is exposed to a laser beam and developed.

Abstract: A system and method are disclosed in which particles sorted by a flow cytometer may be deposited directly into a deposition layer formed on the surface of an optical disc, and information regarding measurements made of the particle, as well as the storage location of the particle, can be written to the recording layer of the optical disc.

Abstract: A two-photon absorption material that can, thanks to a compound of, for example, the following formula (6), perform non-resonant two-photon absorption by light in the region shorter than 700 nm with high sensitivity and has sufficient recording/reproduction properties, a two-photon absorption recording material, a recording medium and a two-photon absorption compound usable therein are provided.

Abstract: There is disclosed a minute structure including a sulfur compound and a silicon oxide. There is also disclosed a write-once information recording medium including a substrate and a recording layer formed of a mixed inorganic material and deposited on the substrate, wherein the mixed inorganic material contains a sulfur compound and a silicon oxide.

Abstract: An optical storage medium is disclosed that includes an optical disc having layers of graphene on one or both sides of the disc to provide wear protection against scratches and mechanical abrasion. Grahpene is a hard material that is 97.7% optically transparent. Thus, layers of graphene at or near the exterior sides of an optical disc provide wear protection to the optical media from mechanical abrasion and scratches while allowing laser light to pass through the graphene layers to read or write to the optical media.

Abstract: There is provided an optical information recording medium including a plurality of laminated resin layers, and an inorganic layer that is formed in an interface between the resin layers. Storage elastic moduli are different when the interface is assumed to be a boundary. An information signal is recorded in the interface.

Abstract: Imaging layers, optical disks, and methods of preparation of each, are disclosed.

Abstract: The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at a predetermined angle to the non-inclined surface and is larger than the non-inclined surface in the thin portion.

Abstract: Provided is an information storage medium using nanocrystal particles, a method of manufacturing the information storage medium, and an information storage apparatus including the information storage medium. The information storage medium includes a conductive layer, a first insulating layer formed on the conductive layer, a nanocrystal layer that is formed on the first insulating layer and includes conductive nanocrystal particles that can trap charges, and a second insulating layer formed on the nanocrystal layer.

Abstract: An optical information recording medium including: a substrate; two or more information signal layers provided on the substrate; and a cover layer provided on the information signal layers, wherein the surface of one of the side of the substrate and the cover layer is a light irradiation plane, wherein at least one of the information signal layers other than the information signal layer at the deepest portion from the light irradiation plane includes an inorganic recording layer that includes a W oxide and a Pd oxide, a first protective layer that is provided on a first principal plane of the inorganic recording layer, and a second protective layer that is provided on a second principal plane of the inorganic recording layer, wherein at least one of the first protective layer and the second protective layer is a layer with an extinction coefficient of 0.05 to 0.6.

Abstract: An optical information recording medium 10 includes a plurality of recording layers 14, and intermediate layers 15 each provided between the recording layers 14. The optical information recording medium 10 is configured such that first and second intermediate layers 15A, 15B having different refractive indices are arranged alternately with one recording layer 14 interposed therebetween, that ((n3?n1)/(n3+n1))2?0.001 is satisfied, where n1 represents a refractive index of the recording layer 14, and n3 represents a refractive index of the second intermediate layer 15B, and that when a recording layer 14 is irradiated with a recording beam RB and generates heat by absorption of the recording beam RB, an interface (reflection interface 18A) between the recording layer 14 and the first intermediate layer 15A adjacent to this recording layer 14 undergoes a change of shape to record information (recording spot M).

Abstract: A film for producing a sheet for a multilayer optical recording medium, the sheet having a repeating structure containing a plurality of laminated optical recording layers, the sheet has a structure including a unit wherein an optical recording layer and an adhesive layer are laminated or a structure including a unit wherein an optical recording layer, a barrier layer and an adhesive layer are laminated, and a maximum height roughness of the optical recording layer or the barrier layer is 500 nm or smaller, the optical recording layer or the barrier layer is disposed on a process film on a face at a side for forming the optical recording layer or at a side for forming the barrier layer, the face at the side for forming the optical recording layer or at the side for forming the barrier layer having a maximum height roughness of 500 nm or smaller.

Abstract: An optical information recording medium includes a recording layer capable of recording information signals on the basis of application of light, wherein the recording layer contains an oxide of metal X and an oxide of metal Y, the metal X is at least one type selected from the group consisting of tungsten and molybdenum, and the metal Y is at least one type selected from the group consisting of copper, manganese, nickel, and silver.

Abstract: A silver-based magnesium alloy thin film is provided for the semi-reflective coating layer of optical discs. This alloy has moderate to high reflectivity and reasonable corrosion resistance in the ambient environment.

Abstract: A hybrid data disc, method and system of forming the disc are disclosed. The hybrid disc includes a first substrate structure bonded to a second substrate structure, and at least two data layers of different formats for access from different sides of the disc. One example provides the second substrate structure with a second substrate that has at least one curable material layer on each side of the second substrate, and the curable material has a property that results in shrinkage associated with curing of the material. Other examples provide a data disc with different stacking ring configurations, a thinner substrate and substrate structures of opposite curvature.

Abstract: In a method for manufacturing a light-emitting device according to an embodiment of the present invention, one surface of a first substrate including a reflective layer including an opening, a light absorption layer formed over the reflective layer to cover the opening in the reflective layer, a protective layer formed over the light absorption layer and including a groove at a position overlapped with the opening in the reflective layer, and a material layer formed over the protective layer and a deposition surface of a second substrate are disposed to face each other and light irradiation is performed from the other surface side of the first substrate, so that an EL layer is formed in a region on the deposition surface of the second substrate, which is overlapped with the opening in the reflective layer.

Abstract: In an optical disc including a discoid optical-disc substrate and a coating film formed on the optical-disc substrate, the optical-disc substrate includes a first region including the innermost periphery thereof and having a projection formed on the whole of the first region, and a second region located outside of the first region. The coating layer is formed on the second region. Before the coating film is formed, the thickness of the optical-disc substrate at the first region is greater than the thickness of the optical-disc substrate at the second region. After the coating film is formed, the total thickness of the optical-disc substrate at the second region and the coating film is greater than the thickness of the optical-disc substrate at the first region.

Abstract: There are provided titanium oxide particles capable of manifesting an unprecedented property, a manufacturing method thereof and a magnetic memory as well as a charge storage type memory employing the titanium oxide particles. Unlike-conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, provided are titanium oxide particles 3 capable of manifesting an unprecedented property that Ti3O5 particles do not undergo phase transitions at room temperature and allow a paramagnetic metal property thereof to be consistently maintained in any temperature range.